* {
  margin         : 0;
  padding        : 0;
  list-style     : none;
  text-decoration: none;
}

.hide {
  display: none;
}

#slider {
  position: relative;
  overflow: hidden;
  margin  : 40px auto 0;
}

.slider-ul {
  position: absolute;
  width   : 999999999px;
  height  : 100%;
}

.slider-ul-li {
  width  : 520px;
  height : 100%;
  display: inline-block;
}

.slider-ul-li-a,
.slider-ul-li-a-img {
  display: inline-block;
  width  : 100%;
  height : 100%;
}

.slider-circlex {
  position  : absolute;
  bottom    : 20px;
  right     : 0;
  left      : 0;
  text-align: center;
}

.slider-circlex-ul {
  display         : inline-block;
  border-radius   : 8px;
  background-color: red;
  background      : rgba(0, 0, 0, 0.3);
  padding         : 2px;
  font-size       : 0;
}

.slider-circlex-ul-li {
  display         : inline-block;
  width           : 7px;
  height          : 7px;
  background-color: #FFF;
  border-radius   : 50%;
  margin          : 0 4px;
  cursor          : pointer;
}

.slider-circlex-ul-li.active {
  background-color: rgba(0, 255, 13);
}

.slider-btn {
  position  : absolute;
  top       : 50%;
  right     : 0;
  left      : 0;
  margin-top: -15px;
}

.slider-btn a {
  position        : absolute;
  width           : 30px;
  height          : 30px;
  text-align      : center;
  cursor          : pointer;
  background-color: rgba(0, 0, 0, .5);
}

.slider-btn-next {
  right        : -5px;
  border-radius: 50% 0 0 50%;
}

.slider-btn-prev {
  left         : -5px;
  border-radius: 0 50% 50% 0;
}

.slider-btn-prev-span,
.slider-btn-next-span {
  display   : inline-block;
  width     : 10px;
  height    : 20px;
  margin-top: 4px;
  position  : relative;
}

.slider-btn-prev-span::after,
.slider-btn-next-span::after {
  content   : '';
  position  : absolute;
  top       : 50%;
  left      : 50%;
  width     : 7px;
  height    : 7px;
  margin-top: -3.5px;
}

.slider-btn-prev-span::after {
  border-left: 2px solid #FFF;
  border-top : 2px solid #FFF;
  transform  : rotate(-45deg);
  margin-left: -2px;
}

.slider-btn-next-span::after {
  border-right : 2px solid #FFF;
  border-bottom: 2px solid #FFF;
  transform    : rotate(-45deg);
  margin-left  : -7px;
}